Defines the design temperature in the indicated units.
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API-650 limits the design temperature to 200° F / 93° C. If the design temperature exceeds this limit but is less than 500° F / 260° C, then the rules of Appendix M are applied.
Design temperatures that exceed of 500° F / 260° C can cause a fatal error.
If the design temperature value changes, the software automatically implements a routine to interpolate the data from API-650 Table P-1. The software inserts the resulting values of modulus and expansion coefficient into the Nozzle dialog box.
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API-620 limits the design temperature to 250°F / 121°C.